Jun 3, 2025 · A plenum is an air distribution box designed for forced-air systems on residential homes and commercial businesses. It is part of the ductwork, but far different than an air duct as these …

The meaning of PLENUM is a space or all space every part of which is full of matter.

Plenum: a compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system.

What is an HVAC plenum? A plenum is a box made of sheet metal. It connects your HVAC system’s air handler to your ductwork. Your HVAC system creates cool or warm air depending on the season. …

Aug 20, 2025 · A central HVAC box, the plenum balances and distributes air throughout your home’s duct system. The supply plenum distributes conditioned air evenly into your home’s ducts, while the …

Jul 13, 2025 · A plenum is a big part of an HVAC system, but what is the purpose of a plenum? Simply put, it distributes and collects air. It’s the central hub of air flow in a building. This article will cover the …

Aug 20, 2025 · A plenum isn’t one-size-fits-all. The dimensions of your plenum box (such as the 20 x 20 x 36 kit) are chosen based on your system’s airflow needs, measured in CFM (cubic feet per minute). …